Patents by Inventor David MacGibbon

David MacGibbon has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Measurement of a blood flow rate in hemodialysis shunts
    Publication number: 20050178732
    Abstract: The measurement of blood flow in a dialysis shunt is obtained by injection of an indicator material into a venous line leading from dialysis equipment to the shunt. The blood flow in an arterial line leading from the shunt at a location downstream of the venous line to the dialysis equipment is monitored by an arterial line sensor for the presence of the indicator material. A detector connected to the sensor provides a dilution curve in response to the presence of the indicator material and the blood flow in the shunt is calculated from the area under the dilution curve. The locations of the arterial and venous lines in the shunt can be reversed to obtain a measurement of blood recirculation from the venous line into the arterial line.
    Type: Application
    Filed: April 13, 2005
    Publication date: August 18, 2005
    Applicant: Transonic Systems, Inc.
    Inventors: Nikolai Krivitski, David MacGibbon
  • Method and apparatus to measure blood flow in hemodialysis shunts
    Publication number: 20050051496
    Abstract: The measurement of blood flow in a dialysis shunt is obtained by injection of an indicator material into a venous line leading from dialysis equipment to the shunt. The blood flow in an arterial line leading from the shunt at a location downstream of the venous line to the dialysis equipment is monitored by an arterial line sensor for the presence of the indicator material. A detector connected to the sensor provides a dilution curve in response to the presence of the indicator material and the blood flow in the shunt is calculated from the area under the dilution curve. The locations of the arterial and venous lines in the shunt can be reversed to obtain a measurement of blood recirculation from the venous line into the arterial line.
    Type: Application
    Filed: June 18, 2004
    Publication date: March 10, 2005
    Applicant: Transonic Systems, Inc.
    Inventors: Nikolai Krivitski, David MacGibbon